Seiko Cal. 3850 - 820

The 3850-820 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3850 caliber with 33j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-cef4eac7e105]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Cream

Jewels

33j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1979

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